package com.itheima.reggie.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealDishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("")
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);

//        String key = "dish_" + dishDto.getCategoryId() + "_1";
//        stringRedisTemplate.delete(key);

        return R.success("新增菜品成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){

        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();

        queryWrapper.like(name != null, Dish::getName, name);

        queryWrapper.orderByDesc(Dish::getUpdateTime);

        dishService.page(pageInfo, queryWrapper);

        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    @PutMapping("")
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);

//        String key = "dish_" + dishDto.getCategoryId() + "_1";
//        stringRedisTemplate.delete(key);

        return R.success("修改菜品成功");
    }

//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//
//        log.info("dish: {}", dish);
//
//        if(dish.getName() != null){
//            queryWrapper.like(dish.getName() != null, Dish::getName, dish.getName());
//        }else {
//            queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
//        }
//        queryWrapper.eq(Dish::getStatus, 1);
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list = dishService.list(queryWrapper);
//        return R.success(list);
//    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        List<DishDto> dishDtoList = null;

//        //redis缓存
//        String dishDtoList1 = null;
//        String key = "dish_" + dish.getCategoryId() + "_" + dish.getStatus();
//        dishDtoList1 =  stringRedisTemplate.opsForValue().get(key);
//        if(dishDtoList1 != null){
//            dishDtoList = JSON.parseArray(dishDtoList1, DishDto.class);
//            return R.success(dishDtoList);
//        }


        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        log.info("dish: {}", dish);
        if(dish.getName() != null){
            queryWrapper.like(dish.getName() != null, Dish::getName, dish.getName());
        }else {
            queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        }
        queryWrapper.eq(Dish::getStatus, 1);
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper = new LambdaQueryWrapper<>();
            dishFlavorLambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(dishFlavorLambdaQueryWrapper);

            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

//        stringRedisTemplate.opsForValue().set(key, JSON.toJSONString(dishDtoList), 60, TimeUnit.MINUTES);

        return R.success(dishDtoList);
    }

    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable Integer status,@RequestParam List<Long> ids) {
        log.info("status:{},ids:{}", status, ids);

        LambdaUpdateWrapper<Dish> updateWrapper = new LambdaUpdateWrapper<>();
        updateWrapper.in(ids != null, Dish::getId, ids);
        updateWrapper.set(Dish::getStatus, status);
        dishService.update(updateWrapper);


//        for(Long i : ids){
//            String key = "dish_" + ids + "_1";
//            stringRedisTemplate.delete(key);
//        }


        return R.success("售卖状态修改成功");
    }

    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("删除的ids：{}", ids);
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(Dish::getId, ids);
        queryWrapper.eq(Dish::getStatus, 1);
        int count = dishService.count(queryWrapper);

        LambdaQueryWrapper<SetmealDish> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.in(SetmealDish::getDishId, ids);
        int count1 = setmealDishService.count(lambdaQueryWrapper);

        if (count > 0 || count1 > 0) {
            throw new CustomException("删除列表中存在启售状态商品或套餐中商品，无法删除");
        }
        dishService.removeByIds(ids);
        return R.success("删除成功");
    }
}
